Thermal oil electric heaters adopt closed-loop heat supply, transporting heat energy in liquid phase, with low heat loss, significant energy-saving effect, and good environmental performance. Due to the tubular structure with sufficient heating surface, they have high thermal efficiency.
Now, regarding possible abnormalities during the use of such products, the following analysis is provided:
Abnormality 1: When the current of the circulation pump is lower than normal, the efficiency and flow rate of the circulation pump decrease.
Cause: It may be caused by scaling and blockage in the heat supply pipeline.
Solution: Clean and remove the blockage.
Abnormality 2: The pump pressure remains unchanged, but the current increases while the flow rate decreases.
Cause: It may be caused by thermal oil deterioration and increased viscosity.
Solution: Replace or regenerate the thermal oil in time, and pay attention to venting.
Abnormality 3: The current value of the circulation pump decreases, and the outlet pump pressure returns to zero, indicating that the pump is running dry without oil supply.
Cause: It may be caused by vaporization of the thermal oil. Identify the cause of vaporization and take corresponding measures.
Solution: If the circulation pump is running dry due to filter blockage, immediately open the bypass to clean the filter;
If it is due to water or gas from water decomposition in newly added thermal oil not being expelled from the system, immediately open the vent valve to release the gas.
Abnormality 4: When the pressure difference across the filter increases and the pump inlet pressure decreases,
Cause: It may be caused by filter screen blockage.
Solution: Open the bypass, disassemble and clean the filter.
